使用本征库时如何读取文件？

file_path = "path/to/file.txt"
file = open(file_path, "r")
content = file.read()
file.close()

import java.io.File;
import java.io.FileReader;
import java.io.IOException;

public class FileReadExample {
    public static void main(String[] args) {
        String filePath = "path/to/file.txt";
        File file = new File(filePath);
        
        try (FileReader reader = new FileReader(file)) {
            int character;
            while ((character = reader.read()) != -1) {
                System.out.print((char) character);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}